•  Many cities expand from the centre outwards adding a ring road every 15 years or less.

•  As this happens the land value increases concentrically on the inner rings, leading to large-scale demolition and rebuilding at higher densities.

•  The construction materials needed for this urban expansion cycle accounts for nearly 50% of an expanding economy’s annual carbon footprint and nearly the same share of GDP.

 

So instead of the regular demolition of large swathes of urban territory, it makes sense to design buildings that can simply be easily moved into the next available ring following commercial pressures to develop each plot to maximise land value.